From: Wu Fengguang <wfg@mail.ustc.edu.cn>
To: Pavel Machek <pavel@suse.cz>
Cc: linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
Andrew Morton <akpm@osdl.org>, Jens Axboe <axboe@suse.de>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Badari Pulavarty <pbadari@us.ibm.com>,
Nigel Cunningham <ncunningham@linuxmail.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [RFC] kernel facilities for cache prefetching
Date: Thu, 4 May 2006 20:28:30 +0800 [thread overview]
Message-ID: <346745706.15764@ustc.edu.cn> (raw)
Message-ID: <20060504122830.GA6205@mail.ustc.edu.cn> (raw)
In-Reply-To: <20060502191000.GA1776@elf.ucw.cz>
On Tue, May 02, 2006 at 09:10:01PM +0200, Pavel Machek wrote:
> > $ echo "file /dev/hda1" > /proc/filecache
> > $ cat /proc/filecache
> > # file /dev/hda1
> > # mask 0
> > #
> > # idx len
> > 0 24
> > 48 2
> > 53 5
> > ......
>
> Could we use this instead of blockdev freezing/big suspend image
> support? It should permit us to resume quickly (with small image), and
> then do readahead. ... that will give us usable machine quickly, still
> very responsive desktop after resume?
Badari's usage case inspired me that on suspension we can
- first invoke a user-land tool to do all the cache
status-logging/analyzing/selective-dropping jobs
- then let the kernel write all the remaining caches(made up of many
small chunks) to the suspend image
And do the reverse things on restoring.
With that we moved all the strategies to userspace.
Wu
prev parent reply other threads:[~2006-05-04 12:28 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060502075049.GA5000@mail.ustc.edu.cn>
2006-05-02 7:50 ` [RFC] kernel facilities for cache prefetching Wu Fengguang
2006-05-02 12:46 ` Diego Calleja
[not found] ` <20060502144203.GA10594@mail.ustc.edu.cn>
2006-05-02 14:42 ` Wu Fengguang
2006-05-02 16:07 ` Diego Calleja
[not found] ` <20060503064503.GA4781@mail.ustc.edu.cn>
2006-05-03 6:45 ` Wu Fengguang
2006-05-03 18:14 ` Diego Calleja
2006-05-03 23:39 ` Zan Lynx
2006-05-04 1:37 ` Diego Calleja
2006-05-02 15:55 ` Linus Torvalds
2006-05-02 16:35 ` Andi Kleen
[not found] ` <20060503041106.GC5915@mail.ustc.edu.cn>
2006-05-03 4:11 ` Wu Fengguang
2006-05-03 17:28 ` Badari Pulavarty
[not found] ` <346733486.30800@ustc.edu.cn>
2006-05-04 15:03 ` Linus Torvalds
2006-05-04 16:57 ` Badari Pulavarty
[not found] ` <20060505144451.GA6134@mail.ustc.edu.cn>
2006-05-05 14:44 ` Wu Fengguang
[not found] ` <20060503071325.GC4781@mail.ustc.edu.cn>
2006-05-03 7:13 ` Wu Fengguang
2006-05-03 12:59 ` Nikita Danilov
2006-05-03 22:20 ` Rik van Riel
[not found] ` <20060506011125.GA9099@mail.ustc.edu.cn>
2006-05-06 1:11 ` Wu Fengguang
2006-05-04 0:28 ` Linda Walsh
2006-05-04 1:31 ` Linus Torvalds
2006-05-04 7:08 ` Ph. Marek
2006-05-04 7:33 ` Arjan van de Ven
[not found] ` <20060504121454.GB6008@mail.ustc.edu.cn>
2006-05-04 12:14 ` Wu Fengguang
2006-05-04 12:34 ` Arjan van de Ven
2006-05-03 21:45 ` Linda Walsh
[not found] ` <20060504121212.GA6008@mail.ustc.edu.cn>
2006-05-04 12:12 ` Wu Fengguang
2006-05-04 18:57 ` Linda Walsh
[not found] ` <20060505152007.GB6134@mail.ustc.edu.cn>
2006-05-05 15:20 ` Wu Fengguang
2006-05-04 9:02 ` Helge Hafting
2006-05-02 7:58 ` Arjan van de Ven
[not found] ` <20060502080619.GA5406@mail.ustc.edu.cn>
2006-05-02 8:06 ` Wu Fengguang
2006-05-02 8:30 ` Arjan van de Ven
[not found] ` <20060502085325.GA9190@mail.ustc.edu.cn>
2006-05-02 8:53 ` Wu Fengguang
2006-05-06 6:49 ` Denis Vlasenko
2006-05-02 8:55 ` Arjan van de Ven
2006-05-02 11:39 ` Jan Engelhardt
[not found] ` <20060502114853.GA9983@mail.ustc.edu.cn>
2006-05-02 11:48 ` Wu Fengguang
2006-05-02 22:03 ` Dave Jones
2006-05-02 8:09 ` Jens Axboe
[not found] ` <20060502082009.GA9038@mail.ustc.edu.cn>
2006-05-02 8:20 ` Wu Fengguang
2006-05-03 22:05 ` Benjamin LaHaise
2006-05-02 19:10 ` Pavel Machek
2006-05-02 23:36 ` Nigel Cunningham
[not found] ` <20060503023505.GB5915@mail.ustc.edu.cn>
2006-05-03 2:35 ` Wu Fengguang
[not found] ` <20060503023223.GA5915@mail.ustc.edu.cn>
2006-05-03 2:32 ` Wu Fengguang
[not found] ` <20060503071948.GD4781@mail.ustc.edu.cn>
2006-05-03 7:19 ` Wu Fengguang
[not found] ` <20060504122830.GA6205@mail.ustc.edu.cn>
2006-05-04 12:28 ` Wu Fengguang [this message]
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